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25 Technologies Every Smart City Should Have

You think cities are crowded now? By 2030, more than 5 billion people will live in urban settings. But before we get to that kind of population density, we have to optimize our cities. We need to make them smarter and better; technology can help.

Cities all around the world work with developers and contractors to make city living better, whether it's improving the timing of traffic lights or creating a useful app, which becomes more powerful as smartphone penetration continues to increase. Apps and well-implemented technology can help cash-strapped governments save money and, be more efficient. We put together a list of the technology that we want to see in every major city. If we missed the item on your urban tech wish list, leave us a note in the comments.

Open-data initiatives and hackathons, like New York City's BigApps competition, which produce useful and resource-saving apps to improve cities and keep citizens informed. Things like air quality, restaurant sanitation scores, building inspection scores and impending legislation should be readily available for all citizens.

Parking apps that show drivers where the nearest available parking spot it. These will save commuters time, gas, emissions and money, while also easing the flow of traffic.

Apps that let users "adopt" city property — trash cans, call boxes, trees, fire hydrants, etc. — so the city doesn't have to spend money sending personnel to tend to them. Boston and Honolulu already have something similar in place, through Code for America, and these projects make citizens feel more invested in their neighborhood.

High-tech waste management systems. Pay As You Throw (PAYT) garbage disposal would encourage people to recycle more and waste less, while using tools like RFID could improve sorting so recyclable plastic bottles don't end up in landfills.

All-digital and easy-to-use parking payment systems — think EZ-pass for parking. We don't want to put receipts on the dashboard or be confined to time limits that make us run out to put more coins in the meter (if you're going to keep money meters, at least let us add money via an app). It's fine that you charge for parking, but improve the system.

A city guide app, with information about museums, parks, landmarks, public art, restaurants and real-time traffic data. These apps, like the ones in Baltimore, Ottawa, Charlotte and New Orleans, help citizens and tourists alike improve their experience in the city.

Touchscreens around the city — whether it's a kiosk to buy a MetroCard or the TVs in taxis — should be bacteria-resistant.

Wi-Fi in subway stations and on trains, along with weather information at every station.

Dynamic kiosks that display real-time information, concerning traffic, weather and local news, like Urbanflow in Helsinki.

App or social media-based emergency alert and crisis response systems — every citizen should have access to vital information. Whether it's an alert about a crime that just happened or advice for a storm approaching the city.

Police forces that use real-time data to monitor and prevent crime.

More public transit, high-speed trains, and bus rapid transit (BRT) to help citizens traverse the city with speed and low emissions.

A sharing economy, instead of a buying economy. If we share or rent from each other, we each need to buy and store fewer goods — think Rent the Runway, Netflix, Airbnb. On a similar note, there should be apps to help you find charities that actually need the stuff you want to toss, such as Zealous Good in Chicago.

Smart climate control systems in homes and businesses, for example, the Nest thermostat.

Widespread use of traffic rerouting apps, such as Greenway and Waze. The average person spends 60 hours in traffic each year, according to Greenway; these apps calculate the best route for each driver to speed up traffic flow and reduce CO2 emissions. They also ensure that a traffic jam on one boulevard doesn't just get displaced to another area.

Water-recycling systems, because while water covers 70% of the earth, we're not preserving the resource the way we should.

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